1.
Berthoud Pass
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Berthoud Pass is a high mountain pass in the Rocky Mountains of central Colorado in the United States. The pass is located west of Denver, and provides a route between upper Clear Creek Canyon to the upper valley of the Fraser River in Middle Park to the north. The pass traverses the continental divide at the Front Range, on the border between Clear Creek County and Grand County, the pass is named for Edward L. Berthoud, the chief surveyor of the Colorado Central Railroad during the 1870s. Accompanied by Jim Bridger, Berthoud discovered the pass in July 1861 while surveying a route for the railroad. The pass is currently the route of U. S. Highway 40 and it provides the fastest road access to Winter Park and a secondary route to Steamboat Springs from Denver and the Colorado Front Range. At least 55 avalanche paths have been mapped on Berthoud Pass, with some of them intersecting U. S. Highway 40, and a smaller subset of paths intersecting the roadway at multiple points on the pass. In 2015, CDOT installed an automated propane-fueled avalanche mitigation system consisting of five units that create concussive blasts to mitigate snow slab buildup on avalanche path #5, Stanley. In 1902, the 3.5 mile Berthoud Pass Ditch began diverting water from the headwaters of the Fraser River over the divide into the basin of Clear Creek. Initially, this water was used for irrigation, but the cities of Northglenn and Golden purchased the ditch in the mid-1980s. The ditch has a capacity of 53.4 cubic feet per second, The ditch was blocked in 1999 by the collapse of the tunnel under the lot at the summit of the pass. In the decade since the repairs, the ditch has typically diverted on the order of 500 acre-feet per year. The twisting road on both sides of the pass also makes car shuttles possible, eliminating the need for skiers and snowboarders to hike back to the top of the pass after each run. The ski resort was closed in 2002 due to problems caused by lack of water. In 2003 the lifts were taken down, while some people continued to ski using snowcats for lift transportation, in 2005 the Colorado DOT began using a fund to restore the area to its natural state. First on the list was the demolition of the historic lodge, a new warming hut was opened at the top of the pass in May 2008, along with an expanded parking area, two scenic viewing areas and a new summit marker sign. The ski lodge and facilities had been in use since the early 1950s, Berthoud Ski resort is claimed by some to have been the first resort and lift in Colorado. Some say it was the first resort to openly welcome snowboarders, the summit of Berthoud Pass is located at approximately 39°47′53. 70″N 105°46′36. 88″W. Founded in 2003, Friends of Berthoud Pass is a collective of backcountry enthusiasts committed to preserving the legacy of public recreation at Berthoud Pass

2.
Byers Canyon
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Byers Canyon is a short gorge on the upper Colorado River in Grand County, Colorado in the United States. The canyon is approximately 8 miles long and is located in the region of the Colorado between Hot Sulphur Springs and Kremmling. U. S. Highway 40 passes through the canyon between Hot Sulphur Springs and Kremmling, the Union Pacific Railroads Moffat Route also travels through the short canyon

3.
Gore Canyon
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Gore Canyon is a short isolated canyon on the upper Colorado River in southwestern Grand County, Colorado in the United States. The steep and rugged canyon, approximately 3 miles long, was carved by the river as it passed the end of the Gore Range southwest of Kremmling. The Colorado descends from approximately 7300 ft to approximately 7000 ft over the length of the canyon, the steep walls ascend approximately 1000 ft on either side. The canyon effectively marks the end of the Middle Park basin in north central Colorado. The canyon is roadless and inaccessible by most traffic, except for the Union Pacific Railroads Moffat Subdivision, despite the short length, the canyon presented a formidable obstacle for the railroad, and the building of the line through it was considered a monumental engineering achievement in its day. The California Zephyr also travels through the canyon, Gore Canyon is also famous for its wild class V whitewater. Captain Samuel Adams considered it unnavigable by boat during his expedition in the 19th century, the construction of the railroad has added boulders and other hazards that have since made the river even more difficult. Today, expert kayakers and rafters frequent the canyon, and now hold a river festival including races. The Gore Canyon Whitewater Festival is held every year on the third Saturday of August and is also the host of the US National White Water Rafting Championship, Gore Canyon was first rafted in the 1970s, and now is even available as a commercial river raft trip. Most outfitters agree that Gore Canyons whitewater is the wildest commercially available whitewater rafting in the state of Colorado and those who are brave enough to raft or kayak Gore Canyon will run rapids such as Pyrite, Tunnel Falls, and Gore Rapid. This is true wild water, so for those who are not expert river runners, Gore Canyon is considered a very dangerous section of the Colorado River

4.
Gore Range
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The Gore Range is a mountain range in the Rocky Mountains of north central Colorado in the United States. The range runs for approximately 60 miles northwest-to-southeast, through western Grand and Summit counties and they form the southern extension of the Park Range, extending southward from Rabbit Ears Pass to the Eagle River near Vail. The Colorado River passes through the range at Gore Canyon, the range forms part of the western boundary of Middle Park at the headwaters of the Colorado, separating it from the upper basin of the Yampa River to the west. The northern section of the north of Gore Pass is somewhat lower than the southern section. The ridges of the range are visible on clear days from the summit of Trail Ridge Road in Rocky Mountain National Park approximately 50 miles to the east. The range is traversed at its southern and southwestern lower flanks by Interstate 70 from Silverthorne to Vail, much of the range is located within the Arapaho and White River National Forests. The range was named for Sir George Gore, an Irish baronet who visited the area in the 1850s on a hunting expedition throughout the American West. Mountain ranges of Colorado Gore Range

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Kawuneeche Valley
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Kawuneeche Valley, also known as Kawuneeche or Coyote Valley, is a marshy valley of the Colorado River near its beginning. It is located on the west side of Rocky Mountain National Park in Colorado, the axis of the valley runs almost directly north to south. Kawuneeche means valley of the coyote in Arapaho language and there is a Coyote Valley Trail head by US Route 34 in the half of the park. Coyotes still live here, as do wapiti, mule deer, moose, along the main part of valley runs the lower section of the Trail Ridge Road - the highest continuous paved road in the United States. The construction of the a water diversion canal called Grand Ditch between the 1890s and 1930s reduced the water table and limited the frequency and magnitude of the floods in the Kawuneeche Valley. In addition, Grand Ditch breached its bank on May 30,2003, the Grand Ditch owner - the Water Supply and Storage Company was ordered to pay $9 million settlement to the Rocky Mountain National Park. It was the largest natural resource damages payment in the history of the Park System Resource Protection Act, Grand Ditch exerts also negative aesthetic impact on the Kawuneeche. Elk was reintroduced to its old stomping grounds in the Colorado River Valley in the mid-1910s and this solitary species wanders alone moving south from Wyoming or east from Utah. And such moose probably account for sightings and kills in Colorado between the 1860s and 1960s and this is an ecological innovation driven largely by state game officials to attract sportsmen and tourists. However, moose are known to undergo dramatic population cycles, which, in combination with European settlement, populations were known in southern Wyomings Medicine Bow Mountains. In 1978 and 1979,4 bulls,13 cows,4 yearlings, all radio collared,12 each year. And today Kawuneeche Valley is a prime habitat, although sightings frequently occur even further, east of the Continental Divide. Large herbivores have become so numerous in the Kawuneeche Valley, that cause significant harm to the willow thickets and other plants. Elk is overpopulated, but rarer moose more specialized -91. 3% of its summer diets consist of six willow species and this is accompanied by drought and the proliferation of a native fungus spread by a bird called the sapsucker. The primary fungus species is Grosmannia clavigera, but Ophiostoma is also present, the fungi kill the stems above the wells drilled by sapsuckers. All these factors weaken the ability of the valley’s willows to generate new growth, their communities have declined, the most important bark beetle species in the Kawuneeche Valley are mountain pine beetle and spruce beetle. In recent years, these species have devastated forests on the side of Rocky Mountain National Park. They were abandoned after a few years of the mining boom

6.
La Poudre Pass
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La Poudre Pass elevation 10,184 ft is a high mountain pass located in the Rocky Mountains of northern Colorado in the United States. At the pass, the Continental Divide is the boundary between Grand and Larimer counties, and is also the boundary of Rocky Mountain National Park. The pass itself is a broad, flat, swampy area, in the wet meadow just south of the divide, the Colorado River begins its course as a tiny stream. Rocky Mountain National Parks La Poudre Pass Ranger Station is also located in the pass, to visit the pass, follow Long Draw Road south from its junction with State Highway 14 in Poudre Canyon, just east of Cameron Pass. Long Draw Road is unpaved, but can be traveled by regular passenger automobiles, after passing Long Draw Reservoir the road ends at the La Poudre Pass Trailhead parking area. Its a very short walk from here to the pass, which is marked by the sign to Rocky Mountain National Park. At this sign, you are standing on the Continental Divide

7.
Middle Park (Colorado basin)
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Middle Park is a high basin in the Rocky Mountains of north-central Colorado in the United States. It is located in Grand County, on the southwest slope of Rocky Mountain National Park, the basin surrounds the headwaters of the Colorado River on the west side of the Front Range. It extends southwestward from the source of the Colorado at Grand Lake, downstream past Granby, Hot Sulphur Springs, Parshall and it terminates on the western end roughly where the Colorado passes Gore Canyon at the southern end of the Gore Range. The valley also extends into the valleys of side tributaries on the upper Colorado such as the Fraser River, Williams Fork. The valley of the Fraser contains the towns of Fraser and Winter Park, the valley receives its name from being the middle of the three large mountain valleys in Colorado on the western side of the Front Range. The other two are North Park and South Park, U. S. Highway 34 traverses the valley from the northeast to the southwest, and connects to U. S. Highway 40 at Granby. North Park, to the north, is drained by the North Platte River and separated from the valley by low passes, Muddy Pass. The passes on the east and south, connect to the basin of the South Platte River and they are both in the Front Range proper and thus are higher and more likely to be snow covered. Milner Pass is near the point on Trail Ridge Road and is open only during summer months. Berthoud Pass, at the headwaters of the Fraser south of Winter Park and this latter route is the most direct route between the valley and Denver. The valley contains several reservoirs on the Colorado and its tributaries, including Lake Granby, the main industry in the valley is tourism, including alpine skiing at Winter Park Ski Resort. Much traffic between Denver and the resort of Steamboat Springs passes through the valley as well, allowing for secondary tourism industries to proliferate in the smaller towns

8.
Milner Pass
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Milner Pass, elevation 10,759 ft is a mountain pass in the Rocky Mountains of northern Colorado in the United States. It is located on the divide in the Front Range, within Rocky Mountain National Park. The pass provides the passage over the continental divide for US34, the pass is not, however, the high point on Trail Ridge Road, which crests at 12,183 ft east of the pass within Rocky Mountain National Park. Along with the rest of Trail Ridge Road, the pass is closed in winter from the first heavy snow fall until the opening of the road around Memorial Day. The gentle pass divides the headwaters of the Cache la Poudre River, the road near the pass provides a panoramic view of the Never Summer Mountains to the west

9.
Muddy Pass
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Muddy Pass is a high mountain pass in the Rocky Mountains of northern Colorado in the United States. The pass straddles the continental divide along the boundary between Jackson and Grand counties, the pass separates North Park and the headwaters of the North Platte River with Middle Park near the headwaters of the Colorado River. It is named for Muddy Creek, a tributary of the Colorado that descends southward from the pass to join the Colorado at Kremmling. The pass is one of the crossings of the continental divide in Colorado. It is rarely closed in winter and has an approach on both sides, with no switchbacks or tight spots. It provides the route of U. S. Highway 40 between Kremmling and Steamboat Springs, the road briefly enters the watershed of the North Platte. Rabbit Ears Pass, which is just to the west of the pass, state Highway 14 from Walden, Colorado has its western terminus at the pass, where it intersects U. S. Highway 40

10.
Never Summer Mountains
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The Never Summer Mountains are a mountain range in the Rocky Mountains in north central Colorado in the United States consisting of seventeen named peaks. The range is small and tall, covering only 25 sq mi with a length of 10 mi while rising to over 12,000 ft at over ten distinct peaks. The range straddles the Jackson-Grand county line for most of its length, a panoramic view of the range is available from sections of Trail Ridge Road in Rocky Mountain National Park. One of the northernmost peaks, Nokhu Crags, is visible from the west side of Cameron Pass. The rocks of Never Summer Mountains are younger than most of the mountain ranges. Most of the highest peaks in the range are granodiorite that was uplifted during the Miocene epoch, the ranges highest summit, Mount Richthofen, is the remnant of an andesite volcanic plug. The Nokhu Crags in the north are mostly Pierre Shale dating from Cretaceous times, a large thrust fault underneath the Kawuneeche Valley thrust older Precambrian rocks on top of the younger Cretaceous rocks on the east side of the range. The southern peaks are Miocene-aged granite, and finally Precambrian-aged biotite gneiss, beginning two-million years ago glaciers began carving the jagged peaks of the Never Summer Mountains. Successive waves of glaciation continued to reshape the mountains until the Pinedale Glaciation ended twelve-thousand years ago, the peaks are enormous weathered masses of granitic rock heavily covered with green and orange lichens surrounded on all sides by large fields of talus shed from the original peaks. Many alpine lakes are nestled amongst the peaks, most vegetation is low-growing and stunted. Few trees grow at the altitudes and Krummholz abounds. In 1879 prospectors discovered silver on Mount Shipler, starting a small mining rush, a mining town was platted and given the name Lulu City 40°26′44″N 105°50′53″W. Other small settlements were founded in the area, including Dutchtown, the population swelled as high as 5,000 miners and business owners catering to those miners. However, low grade ore, combined with difficult transportation and lack of a smelter to process the ore conspired against the boom. By late 1883 the mining ended and the miners moved on. The last miners in Dutchtown left by 1884, today remnants of the towns and mines are accessible by hiking trails. In 1890 a project called the Grand Ditch began, the ditch is a 16.2 mi water diversion project. Streams and creeks flow from the highest peaks are diverted into the ditch

11.
Rabbit Ears Pass
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Rabbit Ears Pass is a high mountain pass in the Rocky Mountains of northern Colorado in the United States. The summit has the shape of rabbit ears, which two large columns of basalt rock formations from the second volcanic episode. Rabbit Ears Peak is underlain by a pink tuff and the basalt immediately to the west is underlain by red, volcanic breccia occurs only at the Peak, which is a large stratified breccia pile. The three basal layers are cut by a basalt dike immediately beneath the peak, from petrographic evidence there appears to have been one period of lava flows and this surface can be seen at Rabbit Ears Peak. The Rabbit Ears Pass area covers 56 square miles in north central Colorado at the junction of the Rabbit Ears Range and it was started in 1911 and was not completed until 1917. Present work is along lines of reducing curves and improving the roadbed, the road connects Routt with Jackson and Grand counties and furnishes direct connection with Denver by way of Kremmling and Berthoud Pass, where the main range is crossed again. The pass straddles the Continental Divide at the end of the Park Range. The name is taken from nearby Rabbit Ears Peak, a mountain in the Park Range to the north that is visible from the east side of the pass during good weather. The pass separates the basin of the Yampa River on the west from North Park. The climate of Rabbit Ears Pass is generally semi-arid to humid, vegetation consists mostly of pine, spruce, and aspen trees. Sagebrush grows on the Niobrara, Pierre and Coalmount formations, undergrowth is dense in most places. Like many places in the West, Rabbit ears Pass experienced a decline in Englemann spruce trees due to outbreaks of the spruce bark beetle. During the 1940s much of the zone of Northwest Colorado was severely affected by beetle outbreak. Spruce beetle outbreaks have taken place in area in 1716-1750, 1827-1845, 1860-1870. Large-scale outbreaks of spruce beetle have long been an important component of the dynamics of forests in Colorado. During outbreaks, spruce beetle may attack and kill lodgepole pine as well as spruce, nearly all attacked trees are killed This pass offers habitat to many different animal species. It supports important winter and summering ranges for many animals, species commonly seen on the pass range from elk, mule deer, and moose, to black bears, foxes, long-tailed weasels, snowshoe hares, and a variety of bird species. The winter snowpack provides a habitat for many non-hibernating burrowing animals such as voles, lemmings

12.
Rabbit Ears Range
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The Rabbit Ears Range is a mountain range of the Rocky Mountains in north central Colorado in the United States. The range stretches east-west along the divide forming the border between Grand and Jackson Counties, separating Middle Park from North Park. The range connects the Front Range on the east with the Park Range and it is traversable at Willow Creek Pass. Muddy Pass separates the Rabbit Ears range to the east from the Park Range to the north, parkview Mountain 12,301 Sheep Mountain 11,819 Elk Mountain 11,419 Mountain ranges of Colorado

13.
Rollins Pass
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Rollins Pass, elevation 11,660 ft, is a mountain pass in the Rocky Mountains of north-central Colorado in the United States. The pass is located on and traverses the continental divide at the crest of the Front Range southwest of Boulder, and is at the boundaries of Grand, Gilpin, Rollins Pass was added to the National Register of Historic Places in 1997. Rollins Pass sits approximately five miles east and opposite the popular ski area in Winter Park, the Boulder Wagon Road, which predates the rail route, employed much of what would later become Rollins Pass. The pass is traversed by two unpaved roads, mostly the former roadbed of the Denver, Northwestern, and Pacific Railway, since then, the tunnel was sealed by Boulder County and the United States Forest Service. The BWR is a road not suited to lower clearance two-wheel-drive vehicles. Although open prior to 2008 and in condition, this road remains to this day a subject of much controversy. In 2002 the James Peak Wilderness and Protection Area Bill was passed by Congress, Boulder County officials and the USFS-Boulder Ranger District have resisted the wording of the law and have closed the BWR. The reopening of the BWR, and/or repair of the Rollins Pass Road, Rollins Pass is a popular recreational location for its spectacular views, wildflowers, hiking, and photography during the summer months. Official snowmobile tours follow much of the road from Arrow. However, the tour does not go higher than Ptarmigan Point, Winter snows make reaching these points impossible after early October. There are no facilities on either side of the pass, since usage of Rollins Pass is currently classified as heavy by the United States Forest Service, parking can be limited at designated parking sites. The only access to the actual Rollins Pass from the east is via the disputed 4WD BWR due to the tunnel closure, from Rollinsville to East Portal, the road is an all-weather gravel road, with some chattery washboard sections, which can be traveled by regular automobiles. However, beyond East Portal the road very rough due to lack of maintenance. Although not steep or loose, it is recommended that a high clearance 4WD vehicle be used and this section of road is open to just beyond Jenny Lake where there is a concrete barricade approximately one half mile before the Needles Eye Tunnel. The road is open for hiking beyond the barricade to the entrance of the tunnel. Native Americans were the first to utilize Rollins Pass as a natural, low crossing over the Continental Divide for the purposes of hunting of large game, including big-horn sheep. There are more than 96 documented game drives, including the Olson Game Drive, found largely above timberline, handmade rock walls drove prey towards hunters waiting in blinds. These unique high-altitude constructs were built, refined, and continually used over millennia, the Olson site is a multi-component rock walled game drive and is but one part of a much larger game drive complex located on Rollins Pass

14.
Willow Creek Pass (Colorado)
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Willow Creek Pass, elevation 9,659 ft, is a mountain pass that crosses the Continental Divide in the Rocky Mountains of north central Colorado. The pass encompasses the continental divide in the Rabbit Ears Range along the border between Jackson County and Grand County, North of the pass, the Illinois River descends into North Park in the basin of the North Platte River. South of the pass, Willow Creek, for which the pass is named, the pass is not an especially high one along the continental divide in Colorado, since the mountains separating North Park and Middle Park are relative low compared to nearby ranges. The approach from either side is mild and the pass is closed in winter. The vicinity of the pass is sparsely populated, with no communities in the vicinity. The pass is traversed by State Highway 125, the nearest commercial facilities are in the unincorporated community of Rand in Jackson County just north of the pass

Berthoud Pass
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Berthoud Pass is a high mountain pass in the Rocky Mountains of central Colorado in the United States. The pass is located west of Denver, and provides a route between upper Clear Creek Canyon to the upper valley of the Fraser River in Middle Park to the north. The pass traverses the continental divide at the Front Range, on the border between Clea

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View from the summit of Berthoud Pass

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Harry Yount at Berthoud Pass in 1874

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Berthoud Pass Lodge July 1963

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New building in September of 2013

Byers Canyon
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Byers Canyon is a short gorge on the upper Colorado River in Grand County, Colorado in the United States. The canyon is approximately 8 miles long and is located in the region of the Colorado between Hot Sulphur Springs and Kremmling. U. S. Highway 40 passes through the canyon between Hot Sulphur Springs and Kremmling, the Union Pacific Railroads M

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Byers Canyon, looking upstream. The poles adjacent to the tracks on the left carry alarm wires that stop train traffic in the event of a rockslide

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Jurisdictions

Gore Canyon
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Gore Canyon is a short isolated canyon on the upper Colorado River in southwestern Grand County, Colorado in the United States. The steep and rugged canyon, approximately 3 miles long, was carved by the river as it passed the end of the Gore Range southwest of Kremmling. The Colorado descends from approximately 7300 ft to approximately 7000 ft over

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Gore Canyon near one of the shorter tunnels on the track. The alarm fences located along the track in this area are visible

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Jurisdictions

Gore Range
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The Gore Range is a mountain range in the Rocky Mountains of north central Colorado in the United States. The range runs for approximately 60 miles northwest-to-southeast, through western Grand and Summit counties and they form the southern extension of the Park Range, extending southward from Rabbit Ears Pass to the Eagle River near Vail. The Colo

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The southern end of the Gore Range seen from Dillon Reservoir.

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The Gore Range as seen from Vail, Colorado.

Kawuneeche Valley
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Kawuneeche Valley, also known as Kawuneeche or Coyote Valley, is a marshy valley of the Colorado River near its beginning. It is located on the west side of Rocky Mountain National Park in Colorado, the axis of the valley runs almost directly north to south. Kawuneeche means valley of the coyote in Arapaho language and there is a Coyote Valley Trai

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Kawuneeche Valley from U.S. Highway 34.

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Wapiti (elk) in Kawuneeche Valley at dawn

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Colorado River at the Coyote Valley Trail head, Kawuneeche Valley

La Poudre Pass
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La Poudre Pass elevation 10,184 ft is a high mountain pass located in the Rocky Mountains of northern Colorado in the United States. At the pass, the Continental Divide is the boundary between Grand and Larimer counties, and is also the boundary of Rocky Mountain National Park. The pass itself is a broad, flat, swampy area, in the wet meadow just s

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La Poudre Pass Ranger Station, Rocky Mountain National Park

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Entrance sign to Rocky Mountain National Park, in La Poudre Pass. This sign also marks the Continental Divide, and the boundary between Grand and Larimer Counties.

Middle Park (Colorado basin)
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Middle Park is a high basin in the Rocky Mountains of north-central Colorado in the United States. It is located in Grand County, on the southwest slope of Rocky Mountain National Park, the basin surrounds the headwaters of the Colorado River on the west side of the Front Range. It extends southwestward from the source of the Colorado at Grand Lake

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View of Middle Park near Granby, Colorado

Milner Pass
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Milner Pass, elevation 10,759 ft is a mountain pass in the Rocky Mountains of northern Colorado in the United States. It is located on the divide in the Front Range, within Rocky Mountain National Park. The pass provides the passage over the continental divide for US34, the pass is not, however, the high point on Trail Ridge Road, which crests at 1

1.
Milner Pass

Muddy Pass
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Muddy Pass is a high mountain pass in the Rocky Mountains of northern Colorado in the United States. The pass straddles the continental divide along the boundary between Jackson and Grand counties, the pass separates North Park and the headwaters of the North Platte River with Middle Park near the headwaters of the Colorado River. It is named for M

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A view of the sign at the pass in April, 2014.

Never Summer Mountains
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The Never Summer Mountains are a mountain range in the Rocky Mountains in north central Colorado in the United States consisting of seventeen named peaks. The range is small and tall, covering only 25 sq mi with a length of 10 mi while rising to over 12,000 ft at over ten distinct peaks. The range straddles the Jackson-Grand county line for most of

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Nokhu Crags, at the northern end of the Never Summer Mountains

Rabbit Ears Pass
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Rabbit Ears Pass is a high mountain pass in the Rocky Mountains of northern Colorado in the United States. The summit has the shape of rabbit ears, which two large columns of basalt rock formations from the second volcanic episode. Rabbit Ears Peak is underlain by a pink tuff and the basalt immediately to the west is underlain by red, volcanic brec

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View of Rabbit Ears Peak from the Pass

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Continental Divide sign at Rabbit Ears Pass

Rabbit Ears Range
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The Rabbit Ears Range is a mountain range of the Rocky Mountains in north central Colorado in the United States. The range stretches east-west along the divide forming the border between Grand and Jackson Counties, separating Middle Park from North Park. The range connects the Front Range on the east with the Park Range and it is traversable at Wil

Rollins Pass
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Rollins Pass, elevation 11,660 ft, is a mountain pass in the Rocky Mountains of north-central Colorado in the United States. The pass is located on and traverses the continental divide at the crest of the Front Range southwest of Boulder, and is at the boundaries of Grand, Gilpin, Rollins Pass was added to the National Register of Historic Places i

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2006 photo of the Needle's Eye Tunnel, near the summit of Rollins Pass. Wire mesh and dowels were installed throughout the years to help prevent additional rock falls and preserve the condition of the 120-year-old tunnel.

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Riflesight Notch railroad trestle on the way up Rollins Pass in 1903.

Willow Creek Pass (Colorado)
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Willow Creek Pass, elevation 9,659 ft, is a mountain pass that crosses the Continental Divide in the Rocky Mountains of north central Colorado. The pass encompasses the continental divide in the Rabbit Ears Range along the border between Jackson County and Grand County, North of the pass, the Illinois River descends into North Park in the basin of